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Birth rates are falling to
low levels. Japan and South Korea are worrying about their
economic
. A conference in Italy has addressed Italy's upcoming
crisis. Italy has one of the world's lowest birth rates. There will be considerable
on pensions and the welfare
as the population ages. The
of the Catholic Church, Pope Francis, has warned that having children is becoming
for many couples. He said starting a family is a "
effort" that only the
can afford.